Onboard diagnostics (OBD) systems have been around since the 1980s and were developed to help limit harmful automotive exhaust emissions. Between 1988 and 1995, U.S.-built vehicles came with what's ...

Although commonly referred to as the “check-engine light,” some cars may instead display the message “Service Engine Soon,” or show a yellow or orange outline of an engine, perhaps with the word ...

Three of the main reasons the check engine light or malfunction indicator lamp (MIL) turns on are: a loose fuel cap, issues with the ignition system, and problems with the emissions system. Many ...

Ignoring a check engine light might feel harmless if the car still runs smoothly, but the warning signals more than a minor inconvenience. Driving with that light on can lead to higher repair costs, ...

When the check engine light comes on in a vehicle, it’s indicating that there is some issue with the car that should be checked out. It could be something minor, such as the gas cap not being screwed ...

Check-engine lights, also known as Malfunction Indicator Lamps (MIL), appear for a reason-specifically when an engine is operating outside of its normal emissions parameters. When that light flashes, ...

You’re driving along in your car or truck and suddenly a yellow light illuminates on your dash telling you to check or service your engine. If you’re like most car owners, you have little idea about ...